Problems

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Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 10024 1506 15% 0.00 1992 1030 52% 5.8
10 Kinds of People 23469 4789 20% 0.01 4039 2928 72% 4.7
2048 9517 4383 46% 0.00 4207 3609 86% 2.3
2, 4, 6, Greaaat 572 89 16% 0.15 55 30 55% 9.0
3D Printed Statues 12226 5640 46% 0.00 5233 4698 90% 1.9
3D Printer 881 149 17% 0.00 362 113 31% 8.8
3-Sided Dice 2665 218 8% 0.00 434 155 36% 8.6
4 thought 10706 3632 34% 0.00 3535 2981 84% 2.4
A1 Paper 6085 1828 30% 0.00 1800 1434 80% 3.6
Aaah! 32019 14879 46% 0.00 13314 12428 93% 1.5
Abandoned Animal 2221 481 22% 0.03 559 406 73% 5.2
ABC 16408 7477 46% 0.00 7051 6393 91% 2.0
Ab Initio 1400 243 17% 0.09 205 120 59% 7.9
Above Average 10959 4505 41% 0.00 4340 3885 90% 2.1
A+B Problem 8809 863 10% 0.03 1234 411 33% 8.4
A Brief Gerrymander 502 102 20% 0.12 91 44 48% 8.8
Abstract Art 395 128 32% 0.00 106 82 77% 5.4
Abstract Painting 539 221 41% 0.00 187 149 80% 4.5
Absurdistan Roads II 669 228 34% 0.00 224 150 67% 6.9
Absurdistan Roads III 1641 472 29% 0.02 445 338 76% 5.6
Access Points 450 157 35% 0.01 149 115 77% 5.9
Accounting 656 261 40% 0.02 188 149 79% 4.0
A Classy Problem 11171 2892 26% 0.01 2512 1940 77% 4.3
ACM Contest Scoring 7651 4790 63% 0.00 4278 4039 94% 1.5
Add 'Em Up! 1552 404 26% 0.01 416 303 73% 4.7
Adding Words 12416 3050 25% 0.00 2914 2284 78% 3.5
A Different List Game 7332 510 7% 0.00 947 184 19% 9.3
A Different Problem 36128 13297 37% 0.00 12189 10564 87% 2.4
Adjoin the Networks 2308 609 26% 0.00 514 408 79% 5.7
Administrative Difficulties 1519 304 20% 0.03 329 226 69% 6.2
Ads 778 69 9% 0.00 131 46 35% 6.0
Advanced Causal Measurements 124 39 31% 0.10 37 30 81% 6.7
Adventure Begins 301 94 31% 0.06 100 75 75% 5.4
Adventures in Moving -- Part IV 1614 362 22% 0.00 309 262 85% 4.5
A Favourable Ending 1826 489 27% 0.00 457 355 78% 4.5
A Feast For Cats 2946 1114 38% 0.00 789 675 86% 3.8
A Flea on a Chessboard 851 171 20% 0.01 180 124 69% 5.4
A Horse Shoe-In 85 8 9% 0.45 13 7 54% 8.2
AI Jeopardy 460 52 11% 0.02 56 39 70% 7.0
Air Conditioned Minions 6009 1737 29% 0.00 1805 1378 76% 4.0
Airline Hub 2258 500 22% 0.01 437 261 60% 6.6
Airport Coffee 976 208 21% 0.08 199 141 71% 6.9
Airport Construction 3571 455 13% 0.02 385 205 53% 7.7
Airport Logistics 67 15 22% 0.00 22 15 68% 7.4
Airports 508 155 31% 0.11 136 99 73% 6.7
Akcija 8519 3841 45% 0.00 3485 3116 89% 1.9
Aladin 788 78 10% 0.10 131 30 23% 8.6
Alchemy 153 32 21% 0.02 40 23 57% 7.9
Alea iacta est 45 16 36% 0.19 20 15 75% 6.6
Alehouse 331 118 36% 0.03 102 74 73% 6.4
Alex and Barb 684 229 33% 0.00 270 204 76% 3.5
Alice in the Digital World 5497 1368 25% 0.01 1238 982 79% 3.6
Alien Codebreaking 272 16 6% 3.23 46 13 28% 8.7
Alien Numbers 2679 1423 53% 0.00 1385 1270 92% 1.9
A List Game 9742 2913 30% 0.00 2784 2348 84% 2.9
All about that base 3036 1214 40% 0.00 1178 996 85% 2.9
All Different Directions 1556 698 45% 0.00 659 585 89% 2.6
Allergy Test 603 155 26% 0.00 191 96 50% 7.7
All Friends 1098 207 19% 0.00 189 101 53% 8.8
All is Well 91 28 31% 0.03 26 24 92% 4.6
All Just A Dream 2399 617 26% 0.05 464 360 78% 5.0
All Kill 59 46 78% 0.00 37 31 84% 4.7
Alloys 476 155 33% 0.00 170 139 82% 4.3
All Pairs Shortest Path 12057 2271 19% 0.00 1435 1031 72% 5.2
Almost Perfect 9874 2269 23% 0.00 2370 1890 80% 3.1
Almost Union-Find 8606 1497 17% 0.02 1390 817 59% 5.7
Alphabet 2098 1075 51% 0.00 1023 867 85% 3.1
Alphabet Animals 2964 896 30% 0.00 832 682 82% 3.1
Alphabet Spam 9473 5881 62% 0.00 4895 4702 96% 1.4
Alternating Current 636 621 98% 0.00 101 100 99% 1.3 - 7.8
Alternative Anagram 211 76 36% 0.00 61 50 82% 6.0
Alternative Bracket Notation 211 91 43% 0.00 97 81 84% 5.0
Altruistic Amphibians 487 128 26% 0.22 110 81 74% 5.4
Amalgamated Artichokes 4555 2047 45% 0.01 1802 1586 88% 2.6
Amanda Lounges 1625 479 29% 0.03 423 341 81% 5.3
A Mazing! 3637 984 27% 0.09 364 272 75% 5.5
Amazing Adventures 396 109 28% 0.02 125 89 71% 6.4
Amazing Race 398 100 25% 0.29 105 74 70% 7.2
Ambiguous Result 271 61 23% 0.02 92 58 63% 7.6
Amsterdam Distance 1851 880 48% 0.00 911 768 84% 2.7
A Multiplication Game 1058 432 41% 0.00 456 357 78% 4.2
Anagram Counting 4277 1691 40% 0.00 1631 1378 84% 2.7
Andrew the Ant 360 101 28% 0.05 110 85 77% 4.2
A New Adventure 1311 197 15% 0.00 204 144 71% 5.8
A New Alphabet 12433 5610 45% 0.00 5241 4839 92% 1.8
An I for an Eye 973 288 30% 0.00 323 247 76% 4.5
Animal Classification 1625 378 23% 0.03 323 216 67% 6.8
An Industrial Spy 1993 1092 55% 0.02 859 752 88% 2.9
Another Brick in the Wall 3731 1899 51% 0.00 1848 1688 91% 2.0
Another Candies 9087 2518 28% 0.00 2569 2144 83% 2.5
Another Coin Weighing Puzzle 461 134 29% 0.00 111 95 86% 4.8
Another Dice Game 113 74 65% 0.00 71 62 87% 4.3
Another Query on Array Problem 1816 230 13% 0.05 363 163 45% 7.8
Antenna Placement 175 72 41% 0.00 59 44 75% 6.9
Anthony and Cora 1036 280 27% 0.00 325 221 68% 5.6
Anthony and Diablo 3862 1417 37% 0.00 1417 1241 88% 2.4
Antiarithmetic? 1859 334 18% 0.01 416 235 56% 7.5
Ants 4308 1926 45% 0.00 1573 1373 87% 2.6
Apaxiaaaaaaaaaaaans! 15379 9179 60% 0.00 8186 7809 95% 1.5
Apostrophe Catastrophe 128 31 24% 0.00 35 22 63% 6.8